AlmaLinux 8 : kernel (ALSA-2026:3963)

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:3963 advisory. kernel: ipv6: BUG in pskbexpandhead as part of calipsoskbuffsetattr CVE-2025-71085 kernel: macvlan: fix possible UAF in macvlanforwardsource CVE-2026-2300...

ALSA-2026:3963 Moderate: kernel security update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: ipv6: BUG in pskbexpandhead as part of calipsoskbuffsetattr CVE-2025-71085 kernel: macvlan: fix possible UAF in macvlanforwardsource CVE-2026-23001 For more details about the security...

UBUNTU-CVE-2026-22977

In the Linux kernel, the following vulnerability has been resolved: net: sock: fix hardened usercopy panic in sockrecverrqueue skbufffclonecache was created without defining a usercopy region, 1 unlike skbuffheadcache which properly whitelists the cb field. 2 This causes a usercopy BUG when...

CVE-2026-22977 net: sock: fix hardened usercopy panic in sock_recv_errqueue

In the Linux kernel, the following vulnerability has been resolved: net: sock: fix hardened usercopy panic in sockrecverrqueue skbufffclonecache was created without defining a usercopy region, 1 unlike skbuffheadcache which properly whitelists the cb field. 2 This causes a usercopy BUG when...

CVE-2026-22977

In the Linux kernel, the following vulnerability has been resolved: net: sock: fix hardened usercopy panic in sockrecverrqueue skbufffclonecache was created without defining a usercopy region, 1 unlike skbuffheadcache which properly whitelists the cb field. 2 This causes a usercopy BUG when...

CVE-2026-22977

CVE-2026-22977 affects the Linux kernel net: sock: fix hardened usercopy panic in sock_recv_errqueue. The issue arises when using skbuff_fclone_cache where no usercopy whitelist exists for skb.cb, causing a usercopy BUG() during put_cmsg() when copying serr->ee from skb->cb via sock_recv_er...

EUVD-2026-3682

In the Linux kernel, the following vulnerability has been resolved: net: sock: fix hardened usercopy panic in sockrecverrqueue skbufffclonecache was created without defining a usercopy region, 1 unlike skbuffheadcache which properly whitelists the cb field. 2 This causes a usercopy BUG when...

Linux Kernel Security Vulnerabilities

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from an undefined user copy area in the skbufffclonecache function. This vulnerability may lead to a...

CVE-2025-71085 ipv6: BUG() in pskb_expand_head() as part of calipso_skbuff_setattr()

In the Linux kernel, the following vulnerability has been resolved: ipv6: BUG in pskbexpandhead as part of calipsoskbuffsetattr There exists a kernel oops caused by a BUGONnhead INTMAX i.e. intskbheadroomskb + lendelta skbheadroomskb is meant to ensure that delta = headroom - skbheadroomskb is...

CVE-2025-71085 ipv6: BUG() in pskb_expand_head() as part of calipso_skbuff_setattr()

In the Linux kernel, the following vulnerability has been resolved: ipv6: BUG in pskbexpandhead as part of calipsoskbuffsetattr There exists a kernel oops caused by a BUGONnhead INTMAX i.e. intskbheadroomskb + lendelta skbheadroomskb is meant to ensure that delta = headroom - skbheadroomskb is...

PT-2026-2606

Name of the Vulnerable Software and Affected Versions Linux kernel affected versions not specified Description The Linux kernel contains a flaw within the IPv6 implementation, specifically in the pskb expand head function as part of calipso skbuff setattr. This issue can lead to a kernel oops...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from an integer overflow in calipsoskbuffsetattr, which could cause the kernel to crash...

Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2025-992840)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-992840 advisory. In the Linux kernel, the following vulnerability has been resolved: skbuff: Account for tail adjustment during pull operations Extending the tail can have some...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2025-992249)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-992249 advisory. In the Linux kernel, the following vulnerability has been resolved: skbuff: Account for tail adjustment during pull operations Extending the tail can have some...

Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2025-992200)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-992200 advisory. In the Linux kernel, the following vulnerability has been resolved: skbuff: Account for tail adjustment during pull operations Extending the tail can have some...

EUVD-2025-203779

In the Linux kernel, the following vulnerability has been resolved: net: atlantic: fix fragment overflow handling in RX path The atlantic driver can receive packets with more than MAXSKBFRAGS 17 fragments when handling large multi-descriptor packets. This causes an out-of-bounds write in...

kernel: skbuff: skb_segment, Call zero copy functions before using skbuff frags

In the Linux kernel, the following vulnerability has been resolved: skbuff: skbsegment, Call zero copy functions before using skbuff frags Commit bf5c25d60861 "skbuff: in skbsegment, call zerocopy functions once per nskb" added the call to zero copy functions in skbsegment. The change introduced ...

kernel: skbuff: skb_segment, Call zero copy functions before using skbuff frags

In the Linux kernel, the following vulnerability has been resolved: skbuff: skbsegment, Call zero copy functions before using skbuff frags Commit bf5c25d60861 "skbuff: in skbsegment, call zerocopy functions once per nskb" added the call to zero copy functions in skbsegment. The change introduced ...

EUVD-2025-34573

In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: fix use-after-free in rtw89coretxkickoffandwait There is a bug observed when rtw89coretxkickoffandwait tries to access already freed skbdata: BUG: KFENCE: use-after-free write in rtw89coretxkickoffandwait...

PT-2025-42274

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.17.0-rc1+ Description The Linux kernel contains a use-after-free flaw within the rtw89 core component. Specifically, the issue occurs in the rtw89 core tx kick off and wait function when accessing already freed...